Physics 3

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• Created by: kelz0209
• Created on: 17-04-14 10:22
Give the formula that links time period and frequency for a pendulum.
Time period=1/frequency
1 of 10
What would happen to the time period of a pendulum if you shortened it's length?
It would decrease.
2 of 10
Give one use of hydraulic systems.
Car braking systems/hydraulic car jacks/manufacturing/deployment of landing gear.
3 of 10
Why are hydralic systems called force multipliers?
They use a small force to create a bigger force.
4 of 10
What's the general name for a force that keeps an object moving in a circle?
Centripedal force.
5 of 10
A car is driving round a circular track at constant speed. Explain why the car is said to be accelerating when its speed is constant.
Because it's direction(and therefore velocity) is constantly changing.
6 of 10
The force that keeps a car moving in a circle is known as centripedal force. The centripedal force acting on the car would be ............. if the car was travelling at the same constant speed but with three extra passengers in the car.
Bigger/increased.
7 of 10
The centripedal force acting on the car would be ........................ if the car was travelling at the same constant speed but on a track with a smaller radius.
Bigger/increased.
8 of 10
The diagram shows a simple hydraulic system containing fluid. A force of 175N is applied to piston 1, which has cross-sectional area of 0.25m . Calculate the pressure created at the first piston.
Pressure=force/cross-sectional area=175/0.25=700Pa (or 700N/m ).
9 of 10
Piston 2 has a cross-sectional area of 1.3m . Calculate the force acting on piston 2.
Pressure at piston 1=pressure at piston 2 Force=pressure x cross-sectional area= 700 x 1.3=910N
10 of 10

Other cards in this set

Card 2

Front

What would happen to the time period of a pendulum if you shortened it's length?

Back

It would decrease.

Card 3

Front

Give one use of hydraulic systems.

Card 4

Front

Why are hydralic systems called force multipliers?

Card 5

Front

What's the general name for a force that keeps an object moving in a circle?